摘要: |
The current Water Resources Development Act is in conference, where differences between the House and Senate versions are being worked out. One important question concerns the proposed Brandon Road Lock & Dam Interbasin Project on the Illinois Waterway in Joliet, Ill., designed to keep invasive Asian carp from entering Lake Michigan. Under strong political pressure from Great Lakes elected officials, Congress picked the most expensive option offered by the Corps, an "all of the above" solution for Brandon Road that uses several anti-carp measures with possible built-in redundancies. Some of the proposed measures have more problematic effects on navigation than others. The towing industry is most concerned about the use of an electric field to stun carp. Other proposed measures include an acoustic barrier, a fish bubbler and a flushing lock, as well as intensive harvesting of carp on the waterway side of the barrier. |